Nut and pipe wrench



A. G. HUNTER.

NUT AND PIPE WRENCH. APPLICATION FILED bcT. 14,1919.

Patented Nov. 23, 1920.

214W 57mm.

CHI/OUIQH UNITED STATES PATENT caries.

ARTHUR G. HUNTER, OF sHERMA TExAs;

' 'NUT'AND PIPE WRENCH.

To all w/mm'z't may concern:

Be it known that 1,-ARTHUR G. Hp'N'rnR, a citizen of the United States residing at Sherman, inthe. county of rrayson and In the drawings, Figure 1 is a longitudinal front edge view of the nut wrench only, constructed according to my invention. Fig. 2 is a side view of the, same with the gripping-jaws attached thereto. Fig. 3 is a back view of Fig. 2.

Referring now to the drawings, it will be seen that my improved wrench comprises, essentially, a primary fixed jaw 1, a shank 2, and a secondary sliding jaw 3. The jaw 1 is formed integral with the forward terminal of the shank, while the secondary jaw 3 is mounted for sliding movement longitudinally of the shank, adapting it in practice to cooperate with the jaw 1 for operating upon a nut or the like. In the front'edge of the shank 2, for a portion of its length, is provided a rack formed of a pluralityof transversely disposed teeth 4:, and in the front edge of the jaw 3 is a recess 5 intersected by alining elongated apertures (not shown.) In said apertures is 'mounted an adjusting screw 7 having threaded thereon a knurled head or disk8, the said disk being confined within the recess 5 in themovable jaw. Integrally formed with the screw 7 is'a locking member comprising a block 9, having teeth 10 on its inner face, the same being adapted toregister with the teeth 4 formed on the shank '1 of the wrench. The block 9 is connected 'jaw 3, is mounted a coiled expansion spring a 15, that serves to sustain the teeth 10 of Applicationfi1ed,.0ctober'14, 1919. SerialjNo. 330,595.

I the block 9, in intermeshing engagement Speci fication of Letters Patent. Patented NO 1920.

with the teethl in the shank. The 'yoke' is counter-bored at Y16, and the jaw at 17, to

seats therefor.

The pipe attachmentsembodied in my invention as shown, consist of cross-section.- ally fiat awslfaand 19, bifurcated at their receive the. endsof the spring and provide rear :ends to straddle the shank2, whereby the arms 20 of the former. jaw, formedzby the bifurcations, are, arranged inplanesjat 'either side of the shank and there securely.

elamped'adjacent to the inner. edge of the aw 1, by a rotatable arbor 21, which bears at its ends in sockets 22 formed in the arms 20, and has a medial portion 23, enlarged diametrically and offset eccentrically to the axis therof, said medial portion being provided with an integral lateral extension 24 for turning the arbor. Hence it will be observed that upon the arbor 21 being caused to undergo, say. a half revolution in one di rection,'as to the position indicatedin F1g.- 2, the jaw 18 will be caused to move bodily in the direction of the jaw 1 and shank '2, and be clamped thereto. A downwardly extended lip 25, of the extension 24 engages the outerfa'ce of the jaw l and aids in retaining the parts in adjusted po-' sition. To release the jaw 18, thearbor 21 is given a half-revolution in the opposite direction, in which position of the parts the locking device may be detached from the sockets 22 and the jaw removed.

The pipe jaw 19 embraces theshank 2 in a manner similar to that of jaw 18, and

their widths are equal to that of the fixed and sliding jaws of the wrench, and their operative faces are toothed or serrated. A

socket 26 is formed in' each side of the movable jaw; 33, in which outwardly and upwardly extending lips 27 of the jaw 19 enter, andby which it is'clamped adjacent to the inner face of the jaw 3, and is additionally secured thereto by the lip .28.

. The handle embodied in my invention as shown, comprises a reduced and longitudinal extension 29 of the shank2, having a beveled portion at 30, and a transversely disposed triangular notch 31 formed inthe wardly'curved terminus thereof. 32 repre sents a detachable portion conforming in contour to that of the part 29, the forward I inner surface of the extended. and downportion 30, and the extended end provided with a lip 33, carrying a triangular projection 34 engaging the notch 31, by which the extended ends of the handle parts are securely joined. member 32 isrsecured to part 29 by a rectangular sleeve 35, and said sleeve is held in position by a set screw 36 which construction permits the assembling of the movable jaw on the shank.

From the foregoing it is thought that the construction, operation, and many advantages of the herein-described invention will be apparent to those skilled in the art with out further description, and it will be understood that various changes in the size, proportiomand minor details of construction may be resorted to wlthoutdepartmg from the spirit or sacrificing any of the advantages of the invention.

Having thus described my invention, what The opposite end of the and extended portion formed thereon comprising about one half of the'handle thereof, abeveled seat at the forward end of the reduced portion, a triangular notch in the inner surface of its opposite downwardly curved end, and a detachable handle portion oi similar contour, to that of the extended shank portion, beveled at one end to fit the beveled seat of: the extension, the other end provided with an upwardly extended lip. having a triangular. projection engaging the notch in the said extension,

and a rectangular sleeve 'slidable on the shank adapted to be forced over the abutting beveled portions of the members to retain them in position.

In testimony whereof aflix my signature.

ARTHUR G. HUNTER. 

